FENG DEYIup, LIN MINGZHOUup2, JIANG CHUNup, WU GUOYOUuploans.com sh advance salucashadv. 1987: APPLICATION OF FUZZY MATHEMATICS IN THE RESEARCH OF SEISMICITY PATTERN. Acta Seismologica Sinica, 9(1): 15-27.
Citation: FENG DEYIup, LIN MINGZHOUup2, JIANG CHUNup, WU GUOYOUuploans.com sh advance salucashadv. 1987: APPLICATION OF FUZZY MATHEMATICS IN THE RESEARCH OF SEISMICITY PATTERN. Acta Seismologica Sinica, 9(1): 15-27.

APPLICATION OF FUZZY MATHEMATICS IN THE RESEARCH OF SEISMICITY PATTERN

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  • Published Date: September 01, 2011
  • A method of fuzzy mathematics has been applied to the recognition of seismic clusters from earthquake catalogues in a given region. A seismic cluster consists of a series of earthquakes related to each other in time and space. Every strong earthquake may be preceded by its seismic cluster. The fuzzy relative degree between two earthquakes has been determined as a function of time interval△t and distance △s by the formula:eij=1e-1t+2e-2s After calculating the degrees of relatedness of all earthquakes with MM0 in some region and taking an empirical parameter A, the seismic clusters can be recognized according to the principle of fuzzy netting.By use of seismic clusters the seismicity patterns of strong earthquakes can be recognized and studied more clearly, simply and quantitatively.This method have been applied to the recognition of seismic clusters and the study of seismicity pattern of earthquakes in North China and Southwest China. The seismic clusters of 13 large earthquakes (M6.5) have been recognized clearly, and their temporal and spatial distributions studied. The linear empirical relationships between lg△T, lgL, lgS and earthquake magnitude M have been constructed approximately, where △T, L and S are the premonitory time (duration), maximum linear dimension and the area of epicenter distribution of the seismic cluster respectively. Obviously, these relationships may be useful to earthquake prediction researches.
  • [1] 国家地震局《一九七六年唐山地震》编辑组,一九七六年店山地震,地震出版社,1982.

    [2] 马宗晋、博征祥、张郸珍、汪成民、张国民、刘德富,1966——1976年中国九大地震,地震出版社,1982.

    [3] 冯德益、林命退 ,蒋淳、吴国有,"地震串"图象的模糊识别,地震预报的地震学清理攻关论文集,地震出版社(待出版).

    [4] 汪培庄,模糊集合论及其应用,上海科学技术出版社,1983.

    [5] 冯德益、楼世博、林命退、陈化成、顾瑾平、钟廷坟,模糊数学方法与应用,地震出版社,1983.

    [6] 中国地震历史资料编辑委员会总编室编,谢毓寿主编,中国地震历史资料汇编,5,科学出版社,1983.

    [1] 国家地震局《一九七六年唐山地震》编辑组,一九七六年店山地震,地震出版社,1982.

    [2] 马宗晋、博征祥、张郸珍、汪成民、张国民、刘德富,1966——1976年中国九大地震,地震出版社,1982.

    [3] 冯德益、林命退 ,蒋淳、吴国有,"地震串"图象的模糊识别,地震预报的地震学清理攻关论文集,地震出版社(待出版).

    [4] 汪培庄,模糊集合论及其应用,上海科学技术出版社,1983.

    [5] 冯德益、楼世博、林命退、陈化成、顾瑾平、钟廷坟,模糊数学方法与应用,地震出版社,1983.

    [6] 中国地震历史资料编辑委员会总编室编,谢毓寿主编,中国地震历史资料汇编,5,科学出版社,1983.
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